Stan,
Well a guy has to have some toys. Fast in boats is like fast in anything else, and it isnt the speed itself that is the problem, as much as the sudden stop.
My horrific crash happened on a race track, at speed. Never crashed on the street, but, I wear the same garb for both-full leathers, ankle high steel toe boots, full face Snell approved helmet, and specific gloves. It can be a bit uncomfortable, depending, but, never as uncomfortable as that wound in your photo. I should mention that it happened at about 110 mph, and I was eating a banana split, with just a couple bruises and no further injuries, within an hour. I was done at the track that day, however. My leathers, gloves, helmet and boots were junk, having done what they were designed to do. They went in the trash.
I literally dont know what protective equipment one should wear going a buck fifty plus in a boat, but, I cant believe it would be much different than what I wear on a street bike.
Be careful.
Best,
Ted